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2.4 Experimental equipment The following major equipment is now operational:

I. High-pressure apparatus

1200 tonne multi-anvil press (25 GPa, 3000 K)

1000 tonne multi-anvil press (25 GPa, 3000 K)

5000 tonne multi-anvil press (25 GPa, 3000 K)

3 piston-cylinders (0.5" and 0.75"; 4 GPa, 2100 K)

Cold-seal vessels (7 kbar, 1000 K, gas & H₂O), TZM vessels (3 kbar, 1400 K), rapid-quench equipment

An internally heated autoclave (10 kbars, ca. 1800 K) should become operational during 1998

 

 II. Structural analysis

2 X-ray powder diffractometers

Single-crystal X-ray cameras

X-ray powder microdiffractometer

2 automated single-crystal X-ray diffractometers

2 Mössbauer spectrometers (1.5 - 1300 K)

Mössbauer millispectrometer

Variable-pressure-temperature Mössbauer spectrometer

FTIR spectrometer with IR microscope

200 kV analytical FEG transmission electron microscope

3 high-resolution solid-state NMR spectrometers (100, 200, 300 MHz)

Raman spectrometer

 

III. Chemical analysis

Cameca SX-50 electron microprobe; fully-automated with 10-crystal, 4 spectrometer configuration, BSE detector and capability for light elements

ICP analysis system

Determination of water content by Karl-Fischer titration

 

IV. In-situ determination of properties

2 calorimeters (77 - 1000 K scanning; 700 - 2200 K drop and scanning)

2 dilatometers (to 1800 K; viscosity by penetration, parallel-plate, fibre elongation and beam-bending; thermal expansivity measurements)

Diamond anvil cells for single crystal X-ray diffraction, Mössbauer spectroscopy Raman scattering, infrared and optical spectroscopy (including facilities for hydrothermal studies)

1-atm furnaces (to 2400 K, gas mixing) including apparatus for viscometry, densitometry and galvanic thermo-chemistry, centrifuge studies

Rotation viscometer

Solid medium Griggs-Blacic deformation apparatus

1-atm high-temperature creep apparatus

Splat quencher

Fragmentation bomb and chamber for studies of explosive volcanism

2 high frequency ultrasonic interferometers (crystalline and molten materials)

Gigahertz ultrasonic interferometer and an interface adaptor to resistance-heated diamond-anvil cells

Heating stage for fluid inclusion studies

Impedance/gain-phase analyzer for electrical conductivity studies

Internally heated autoclave for centrifuge studies

The Geoinstitut has access to an analytical scanning electron microscope and to the university computer centre. The Institute is provided with well equipped machine shops, electronic workshop and sample preparation laboratory.